11-19-2025, 10:14 AM
Yes, 10.0.1.15 is the broadcast address for 10.0.1.0/28. But for this question, that doesn’t change the routing decision. Routers don’t say, "This is a broadcast address, let me ignore this route”. They do a plain longest-prefix match on the destination IP. The router chooses 10.0.1.0/28 via 192.168.0.7 because /28 is more specific than /24.
Whether the final router treats 10.0.1.15 as a broadcast is a separate behavior at the edge, not part of the route lookup on this router. Though in practice, this traffic would likely fail since it's destined to a broadcast address.
Whether the final router treats 10.0.1.15 as a broadcast is a separate behavior at the edge, not part of the route lookup on this router. Though in practice, this traffic would likely fail since it's destined to a broadcast address.